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(No Model.)

l P. MENZENHAUER. TRBMOLO ATTAGHMBNT POR CORNBTS. No. 369,804. Patented Sept. 13, 1887.

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WITNESSES:

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UNITED STATES PATENT OErIcEo FRIEDRICH MENZENHAUER, OF JERSEY CITY, NEV JERSEY, ASSIGNOR OF ONEIIALF TO SIMON DIETCH, OF NEW YORK, N. Y.

ENT FOR CORNETS.

SPECIFICATION forming partof Letters Patent No. 369,804, dated September 13, 1887.

Application iiled February 2l, 1887.

To all whom it may concern:

Be it known that I, FRIEDRICH MENZEN- BAUER, of Jersey City, in the county of Hudson and State ofNew Jersey, have invented certain new and useful Improvements in Tremolo Attachments for Cornets and like Musical Instruments, of which the following is a specication.

The object of my invention is to provide a new and improved tremolo attachment which can be applied on cornets and like musical instruments for the purpose of producing a vibration or tremolo of the sound.

The invent-ion consists in the combination, with a suitable motor, of a valve in the windtube, a cam-track for operating the valve, and mechanism for adjusting the parts so that the motor can actuate the valve, all as will be fully described and set forth hereinafter, and finally pointed out in the claims.

In the accompanying drawings, Figure 1 is a partial side and longitudinal sectional View of my improved tremolo attachment for cornets and like musical instruments, showing the valve raised. Fig. 2 is a sectional view of part of Fig. l, showing the valve lowered. Fig. 3 is a sectional plan View of the attachment; and Fig. 4 is a sectional plan View of part, showing the valve.

Similar letters of reference indicate corresponding parts.

The mouth-piece of the cornet is removed and the tube Ainserted in place of the mouthpiece, and the mouth-piece placed on the opposite end of t-he tube A. Two standards, A', preferably made hollow, are fastened on the tube A and support a frame, preferably composed of two plates, B B', united by two pins, B2. In the frame formed by the plates B B a spring-motor, C, is located, which has a suitable handle, C', for winding it, and from said motor the shaft D is driven by suitable gearing, on which shaft is mounted the cogwheel E, engaged wit-h the pinion F, which drives a retarding mechanism or flier, G, of the usual construction.-

From .the upper surface of the wheel E a series of pins, H, project upward and can be engaged with the lower end of a latch, J, piv- 50 oted on the under side of the top plate, B',

Serial No. 228,289. (No model.)

which latch is provided at the upper endthat is, opposite the one that engages the pins H-with a button or knob, K, above the upper surface of the top plate, B'. An angle-lever, L, is pivoted to lugs on the under side of the top plate, B', one end of the angle-lever resting on the upper edge of the latch J and the other end resting on a liatspring,M, secured at one end on the upper surface of the bottom plate and having its other end rested against the under side of a short lever, N, provided at the end opposite the one on which the spring M rests with an upwardly-projecting lug, O, upon which the projections of a cam-track formed on a wheel, P', mounted on the shaft D below the wheel E, can act. A pin, P, projects downward from the lever O and through one of the tubular standards A', and rests upon a lug, Q, projecting from 'the pivoted end of a valve, R, pivoted in the tube A, upon which valve one end of a spring, S, rests, which serves to press the valve R down, as shown in Fig. 2, to close the tube A.

An inclined valve-scat, a, is formed in the inside of the wind-pipe A, against which sea-t the edges of the valve R can rest when said Valve islowered, as shown in Fig. 2, so as to effectually prevent the passage of air during the time the valve is lowered. Vhen the valve is raised, it is swung into the recess b in the side of the wind-pipe.

rIhe operation is as follows: The springmo tor C is wound in the usual manner. The spring M, pressing upward on one'end of the lever L, presses the other end on the latch J, 85 thereby keeping said latch lowered and the lowered end of the latch engaged with one of the pins H of'the wheel E. Said spring M also presses that end of the lever N carrying the pin P downward, causing said pin P to 9o press downward the lug Q ofthe swinging valve R, thus keeping said swinging valve raised, the power of the spring S being overcome. The air passing through the tube A is not interrupted and the sound is not vibrated. 95 When it is desired to produce a tremolo effect, the button K is depressed sufficiently to disengage the lower end of the lever J from the pins H of the wheel E, thereby permitting the motor to start the train of gearing. Then the roo tji button K is depressed farther, whereby one end of the angle-lever L is pressed upward and the other end is pressed downward su t'- cient to press the free end of the spring M upon the upper surface of the bottom plate, B', and, as said spring M can no longer act on the lever N, the spring S can exert its power on the swinging valve It, whereby the same is thrown down and the lug Q swung up, and said lug Q, acting on the pin P, presses the same upward, and thereby the lug O ofthe lever N is brought in contact with the cam-track on the wheel P', and as said wheel P' revolves the lever N is alternately pressed up and down, and consequently the pin P on said lever will act correspondingly upon t-he lug Q, whereby the valve It is swung up and down and the wind or air passing through the tube A is interrupted at intervals.

Vlien it is desired to stop the tremolo effect, the button K is released, the spring M swings upone end ofthe lever N, and the lower end ofthe lever .I engages with the pins H of the wheel E and stops said wheel, and the piu P is pressed down on the lug Q and swings up the valve R into the position shown in Fig. 1. rPhe tremolo effect is not produced as soon as the motor is started, as in order to produce the tremolo effect it is necessary to press the button K to such an extent that the lever L presses down the spring M, so that it cannot act on the lever N. By rst starting the motor and then permitting the same to produce the tremolo effect I prevent all sluggish movement at the beginning` of the tremolo, and it is not necessary to stop and start the motor every time the tremolo effect is to begin or stop.

In this application I do not claim, broadly, a mouth-piece for a cornet or similar instrument provided with a valve to interrupt the current of air and produce pulsations, and the combination with means for operating said valve to mechanically produce the eti'ects Vof tremolo, as described in my application Serial No. 210,401, iiled August 9, 1886.

Having thus described my inveution,I claim as new and desire to secure by Letters Patent 1. A tremolo attachment for cornets and like musical instruments, consisting of a motor, and a swinging valve in the wind-pipe and actuated by the motor, substantially as shown and described.

2. A tremolo attachment for cornets and like musical instruments, consisting ol a motor, a cam-wheel operated by the motor, and a swinging valve in the wind-pipe, which swinging valve is operated by the cam-wheel, substantially as shown and described.

3. A tremolo attachment for cornets and like musical instruments, consisting ot' a motor, a cani-wheel operated by said motor, and a lever operated by the camwheel, and a swinging valve in the wind-pipe, which valve is acted on by the lever, substantially as shown and described.

4. In a tremolo attachment for cornets and like musical instruments, the combination, with a wind-pipe, of a swinging valve in the same, a pivoted lever which can act on the swinging valve, a spring acting on said pivoted lever, a cam-wheel which can act on said pivoted lever, and a motor Afor operating the cam wheel, substantially as shown and described.

5. In a tremolo attachment for cornets and like musical instruments, the combination, with a wind-pipe, of a swinging valve in the same, a pivoted lever for actuating the swinging valve, a cam-wheel acting on said pivoted lever, a spring acting on the other end of the pivoted lever, a motor for operating the camwheel, a lever for releasing said motor, and an elbow-lever which is actuated by the lever for releasing the motor and in turn acts on the spring acting on the lever for operating the valve, substantially as shown and described.

6. In a tremolo attachment for cornets and like musical instruments, the combination, with a wind-pipe, of a swinging valve in the same, a motor, the wheel E, provided with the pins H, the cam-wheel P, on the saine shaft with the wheel E, and the lever J, the lever N, which can act on the valve, the spring M, acting on the lever N, the elbow-lever L, and the spring S, acting on the valve,substautially as shown and described.

7. In a tremolo attachment for cornets and like musicalinstrumentsthe eombination,with a wind-pipe, ol a pivoted valve in the saine, which valve has a lug, Q. the pivoted lever N, having the pin P, the spring M, acting on the lever N, the wheel E 0n the shaft D, the pins H on the wheel E, the lever J, and the elbowlever L, substantially as shown and described.

8. In a tremolo attachment for cornets and like musical instruments, the combination, with a wind-pipe, ofa swing-valve in the same, a spring acting on the swinging valve, a motor, and power and motion transmitting devices for operating the swing-valve from the motor, substantially as shown and described.

9. In a tremolo attachment for cornets and likemusicalinstru1nents,thecombination,with a wind-pipe having an inclined valveseat, a, of a swinging valve, It, and a motor l'or operating said swinging valve, substantially as shown and described.

In testimony that I claim the foregoing my invention I have signed my naine in presence of two subscribing witnesses.

FRIEDRICH MENZENIIAUER.

Vitnesses:

CARL KARP, SIDNEY MANN. 

